127980999881291 has 2 divisors, whose sum is σ = 127980999881292. Its totient is φ = 127980999881290.

The previous prime is 127980999881257. The next prime is 127980999881297. The reversal of 127980999881291 is 192188999089721.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-127980999881291 is a prime.

It is not a weakly prime, because it can be changed into another prime (127980999881297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63990499940645 + 63990499940646.

It is an arithmetic number, because the mean of its divisors is an integer number (63990499940646).

Almost surely, 2^{127980999881291} is an apocalyptic number.

127980999881291 is a deficient number, since it is larger than the sum of its proper divisors (1).

127980999881291 is an equidigital number, since it uses as much as digits as its factorization.

127980999881291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 846526464, while the sum is 83.

The spelling of 127980999881291 in words is "one hundred twenty-seven trillion, nine hundred eighty billion, nine hundred ninety-nine million, eight hundred eighty-one thousand, two hundred ninety-one".